What kind of scum kills a man's dog?

(Luttrell's dog Dasy, shown here as a puppy)

Even worse, the dog that was given to him to help him forget his losses from his duty as a Navy SEAL?

Marcus Luttrell has written a book, "Lone Survivor" about his experiences as a SEAL in Afghanistan. He's been through hell. Friends gave him this puppy four years ago to help him get over the grief.
Then these low life scum killed her. For kicks.
You can read one of the news stories about it here.
There is no punishment in the legal system of this country commensurate with what these sub-humans deserve to receive.
May they rot in hell.